SHARE Teeth Whitening Kit has developed the most effective non-peroxide teeth whitening system in the world. By using the latest nanotechnology, SHARE Teeth Whitening Kit is to achieve a high effective cleaning without any chemicals. When it gets wet, each nano particle in the interior nano capillary tube, is much smaller than ten thousandth of a hair strand, has super absorption capacity and works fast to absorb the stains from your tooth surface.